Dental implement



W. HIAMBUHL. DENTAL IMPLEMENT.

APPLICATION FILED SEPT 9, 1920.

1 mm Patenfmd w, m 19 2 SHEETS-SHEET l- W. H. AMBUHL.

DENTAL IMPLEMENT- APPLICATION FILED SEPT. 9, 1920.

Patented mm. 2

4, XWZ, 2 SHEETS-SHEE'I 2.

Patented @ct, litil, twill,

WILLIAM H. AMBUHL, or rninanntrnia, rpnnsrrlvanra Application filed September 9, 1920. Serial No. 409,044.

To aZZwho/mit may concern:

Be itlmown that I, WILLIAM H. AMBUHL, a citizen of the Republic of Switzerland, re sidingjin Philadelphia, Pennsylvania, have invented Dental Implements, following is a specification.

This invention relates to that class of dental apparatus particularlydesigned for holding-the human in outh in an open position with the jaws distended or separated more or less widely topermit of operations on the teeth, jaws, etc.; one object of said inven- 111011 bSIRg'lJO provldea device whlch shall atall times tend to hold the mouth open and jaws distended and which may. beadjusted at will either to allow the patient to closethe mouth or to prevent this action;

A "further object of the invention is to provide an implement oflthe class noted which shall actto expose the: teeth [of both jaws While keeping the lips, cheeks, tongue, etc. away from the same, so as to avoid the necessity for the use of rubber dam, fabric or cottonpads, etc, the invention contemplating a device which may be utilized to holder support cotton or fabric rolls or pads in such positions as to protect the tender parts of the mouth as well as to absorb salivaso as to maintain the parts operated on in adry condition. y a j Another object of my invention is to provide a device or]: shall include pador roll-holding members of such design and so associated with the other parts oiithe device, that they shall be caused to follow and conform to the shape of the oral cavity as the jaws are opened or closed, instead of remaining at all, times parallel with each other under these condi- ,tions.

l attain as hereinafter, set forth, reference being had to the accompanyingdrawings, in which, i

Figs. 1 and 2 are front elevations illustrating my implement with its mouth engaging members in their separated and adjacent positions respectivelyyand Figs. 3 and 4 are side elevations corresponding respectively to the showing of Figs. 1 and 2. l w

oi wh ich the the class described which These objects and other advantageous ends In the above drawings 1 and 2 represent two metal bars pivotally connected by a pin 3, which if desired, may be outwardly extended and returned upon itselt as indicated at 4, to provide a handle or operating mem- ,ber. In the present instance I have illustrated the bars 1 and 2 as engaged at approximatelytheir middle points with their upwardly extending ends connected by a coil spring 4i tending to draw them together so as-to lessen the angle between them. Two other bars 5 and6, curved on substantially circular arcs and pivoted together by a pin 7, have their free ends respectively pivoted to the, tree or lower ends of the bars 2 and 1 respectively, e i

The pivot ,3 which connectsthe bars 1 and 2, serves also to connect to them a holder 8 having a passage for the reception of the suitably formed end of an upper pad carrier 9, while the pivot pin 7 which connects the lower bars 5 and 6, similarly serves to! support a second holder 10 for the reception of a second or lower pad carrier 11 and this pivot, like the pivot 3 is suitably formed, as by being bent upon itself, to provide a second operating handle 12. The pad carriers or mouth-engaging members 9 and 11 may be of any desired or suitable 'construction and consist in this nickeled or silvered frames or open plates having suchform and outlinelas to be suited for supporting cotton pads for engagement with and in confirmation to the forms of the soft parts of the mouth such as the tongue, hard palate, cheeks, etc,

lit is especially to be noted that in ac cordance with my invention, it it be assumed. thatthe upperor spring connected ends of the arms 1 and 2 lie in or adjacent a vertical plane in front of an observenthen the lower endsof said bars are bent so to extend at an acute angletoward the rear of said plane. The lower arms 5 and 6 whichare pivoted to the ends of these rearwardly bent aii'ins 1 and 2, are curved forwardly and then brought to substantial parallelism in front of the plane of the upperparts or the arms 1 and 2 to the point where they are connected by the pivot 7.

The upper ends of said arms 1 and 2 are preferably provided with openings 14 for the reception of the ends of a straight and relatively rigid bar or rod 15, whereby after they have been separated to a definite can tent their attached parts may be retained in the given positions by inserting the parallel ends of said bar in said openings as indicated in Fig. 2.

With the above described arrangement of parts, forcing the members 3 "and 7 together causes the various bars to move on their respective pivots so as to diminish the distance between the pad carriers 9 and 11 and approach positions in which their bodies are substantially parallel (Figs. 2 and t). Said carriers may now be introduced into the mouth and as the jaws are separated it is noted that the peculiar formation of the two pairs of bars 1-2 and 5-6 causes the planes of the pad carriers'to be increasingly inclined to each other so that they follow or conform to the general shape or disposition of the jaws and their associated members or tissues instead o1 remaining substantially parallel or maintaining a constant angular relation.

It is to be noted that while for convenience I have referred to the elements 9 and 11. as pad carriers it is obvious that regardless of whether or not! they are utilized to support pads or are employed as shown, their principal function is to serve to directly engage or act upon such parts as the tongue and root of the mouth or if desired, certain of the teeth so as to hold the jaws separated and permit free access of an operator to the teeth,

- etc.

I claim:

1. The combination in a dental implement of two bars pivoted together adjacent their middle portions; a mouth-engaging member carried by said bars adjacent their point ozt connection; two other bars each pivoted to one of said first bars and also pivoted togather; with a second mouth-engaging memer carried adjacent the point of connection of the two latter bars.

2. The combination in a dental implement of two bars pivoted together adjacent their middle portions; a mouth-engaging member carried by said bars adjacent their point of connection; two other bars each pivoted to one of said first bars and also pivoted together; with a second mouth-engaging member carried adjacent the point of connection of the two latter bars, said two pairs of bars being formed to cause the mouth-engaging members to lie substantially parallel when they are moved adjacent each other and to lie at an acute angle when they are moved further apart.

3. The combination in a dental implement of two bars pivoted together adjacent their middle portions; a mouth engaging member carried by said bars adjacent their point of connection; two other bars each pivoted to 1 assess one of said first bars and also pivoted together; a second mouth-engaging member carried adjacent the point of connection of the two latter bars; with a spring connecting the two first bars and acting thereon to tend to separate the mouth-engaging members.

4t. The combination in a dental implement of two bars pivoted together adjacent their middle portions; a moutlncngaging member carried by said bars adjacent their point of connection; two other bars each pivoted to one of said first bars and also pivoted to gether; a second mouth-engaging member carried adjacent the point of connection of the two latter bars, said two pairs of bars being formed to cause the mouth-engaging members to lie substantially parallel when they are moved adjacent each other and to lie at an acute angle when they are moved .further apart; with a spring operative on said first pair of bars to move them into positions in which the mouth-engaging members lie at an acute angle to each other.

5. The combination in a dental implement of two bars pivoted together adjacent their middle portions; a mouth-engaging member carried by said bars adjacent their point of connection; two other bars each pivoted to one of said first bars and also pivoted together; a second mouth-engaging member carried adjacent the point of connection of the two latter bars; with a member for locking said two pairs of bars from movement and thereby holding the mouth-engaging members immovable.

6. The combination in a dental implement of two pairs of bars; two mouth-engaging members; a pivotal member connecting one pair of bars adjacent their middle portions and also connecting one of the mouth-engaging members to said bars; a second pivotal member connecting the ends of the other pair of bars and attaching thereto the second mouth-engaging member; two other pivots respectively connecting the bars of one pair with those of the other pair; and a spring acting on the bars of one pair to tend to separate the mouth-en gaging members.

7. The combination in a dental implement of a pair of bars pivotally connected adjacent their middle portions and each having one end bent out of the plane approximately defined by their other ends; two other bars having a substantially circular curvature respectively pivoted to the bent ends of the first pair of bars and also pivotally connected together; with mouth-engaging members connected to the two pairs of bars adjacent their points of pivotal connection respectively.

8. The combination in a dental implement of a pair of members pivoted together; a mouth-engaging member carried by said first members; a second pair of members respectively pivoted to the members of said firstpair and also pivoted together; with e second mouth-engaging member carried by the second spr ng actlng on the pivoted members tending to separate the mouth-engaging members.

WILLIAM H. AMBUHL.

pair of pivoted members; and a. 

